<template>
  <div class="wrapper-icons">
    <swiper>
      <swiper-slide v-for="page in pages" :key="pages.indexOf(page)">
        <div class="icon" v-for="icon of page" :key="icon.id">
          <div class="icon-img">
            <img class="icon-img-content" :src="icon.url" >
          </div>
          <p class="icon-describe">{{icon.desc}}</p>
        </div>
      </swiper-slide>
    </swiper>
  </div>
</template>

<script>
export default{
  name: 'Icons',
  props: {
    iconList: Array
  },
  computed: {
    pages () {
      const pages = []
      this.iconList.forEach((item, index) => {
        const page = Math.floor(index / 8)
        if (!pages[page]) {
          pages[page] = []
        }
        pages[page].push(item)
      })
      return pages
    }
  }
}
</script>

<style lang="stylus" scoped>
  .wrapper-icons >>> .swiper-container
    width: 100%
    overflow: hidden
    padding-bottom: 50%
    height: 0
  .wrapper-icons
    margin-top: .1rem
    width: 100%
    height: 0
    overflow: hidden
    padding-bottom: 50%
    .icon
      position: relative
      overflow: hidden
      float: left
      width: 25%
      height: 0
      padding-bottom: 25%
      .icon-img
        position: absolute
        top: 0
        left: 0
        right: 0
        bottom: .44rem
        box-sizing: border-box
        padding: .1rem
        .icon-img-content
          display: block
          margin: 0 auto
          height: 100%
    .icon-describe
      position: absolute
      right: 0
      left: 0
      bottom: 0
      height: .44rem
      line-height: .44rem
      text-align: center
      overflow: hidden
      white-space: nowrap
      text-overflow: ellipsis

</style>
